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|
/*****************************************************************
|
| AP4 - PIFF Support
|
| Copyright 2002-2009 Axiomatic Systems, LLC
|
|
| This file is part of Bento4/AP4 (MP4 Atom Processing Library).
|
| Unless you have obtained Bento4 under a difference license,
| this version of Bento4 is Bento4|GPL.
| Bento4|GPL is free software; you can redistribute it and/or modify
| it under the terms of the GNU General Public License as published by
| the Free Software Foundation; either version 2, or (at your option)
| any later version.
|
| Bento4|GPL is distributed in the hope that it will be useful,
| but WITHOUT ANY WARRANTY; without even the implied warranty of
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
| GNU General Public License for more details.
|
| You should have received a copy of the GNU General Public License
| along with Bento4|GPL; see the file COPYING. If not, write to the
| Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
| 02111-1307, USA.
|
****************************************************************/
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "Ap4Piff.h"
#include "Ap4CommonEncryption.h"
/*----------------------------------------------------------------------
| constants
+---------------------------------------------------------------------*/
AP4_UI08 const AP4_UUID_PIFF_TRACK_ENCRYPTION_ATOM[16] = {
0x89, 0x74, 0xdb, 0xce, 0x7b, 0xe7, 0x4c, 0x51, 0x84, 0xf9, 0x71, 0x48, 0xf9, 0x88, 0x25, 0x54
};
AP4_UI08 const AP4_UUID_PIFF_SAMPLE_ENCRYPTION_ATOM[16] = {
0xA2, 0x39, 0x4F, 0x52, 0x5A, 0x9B, 0x4f, 0x14, 0xA2, 0x44, 0x6C, 0x42, 0x7C, 0x64, 0x8D, 0xF4
};
/*----------------------------------------------------------------------
| AP4_PiffTrackEncryptionAtom Dynamic Cast Anchor
+---------------------------------------------------------------------*/
AP4_DEFINE_DYNAMIC_CAST_ANCHOR(AP4_PiffTrackEncryptionAtom)
/*----------------------------------------------------------------------
| AP4_PiffTrackEncryptionAtom::Create
+---------------------------------------------------------------------*/
AP4_PiffTrackEncryptionAtom*
AP4_PiffTrackEncryptionAtom::Create(AP4_Size size, AP4_ByteStream& stream)
{
AP4_UI08 version = 0;
AP4_UI32 flags = 0;
AP4_Result result = ReadFullHeader(stream, version, flags);
if (AP4_FAILED(result)) return NULL;
if (version != 0) return NULL;
return new AP4_PiffTrackEncryptionAtom(size, version, flags, stream);
}
/*----------------------------------------------------------------------
| AP4_PiffTrackEncryptionAtom::AP4_PiffTrackEncryptionAtom
+---------------------------------------------------------------------*/
AP4_PiffTrackEncryptionAtom::AP4_PiffTrackEncryptionAtom(AP4_UI32 size,
AP4_UI08 version,
AP4_UI32 flags,
AP4_ByteStream& stream) :
AP4_UuidAtom(size, AP4_UUID_PIFF_TRACK_ENCRYPTION_ATOM, version, flags),
AP4_CencTrackEncryption(stream)
{
}
/*----------------------------------------------------------------------
| AP4_PiffTrackEncryptionAtom::AP4_PiffTrackEncryptionAtom
+---------------------------------------------------------------------*/
AP4_PiffTrackEncryptionAtom::AP4_PiffTrackEncryptionAtom(AP4_UI32 default_algorithm_id,
AP4_UI08 default_iv_size,
const AP4_UI08* default_kid) :
AP4_UuidAtom(AP4_FULL_UUID_ATOM_HEADER_SIZE+20, AP4_UUID_PIFF_TRACK_ENCRYPTION_ATOM, 0, 0),
AP4_CencTrackEncryption(default_algorithm_id,
default_iv_size,
default_kid)
{
}
/*----------------------------------------------------------------------
| AP4_PiffTrackEncryptionAtom::InspectFields
+---------------------------------------------------------------------*/
AP4_Result
AP4_PiffTrackEncryptionAtom::InspectFields(AP4_AtomInspector& inspector)
{
return DoInspectFields(inspector);
}
/*----------------------------------------------------------------------
| AP4_PiffTrackEncryptionAtom::WriteFields
+---------------------------------------------------------------------*/
AP4_Result
AP4_PiffTrackEncryptionAtom::WriteFields(AP4_ByteStream& stream)
{
return DoWriteFields(stream);
}
/*----------------------------------------------------------------------
| AP4_PiffSampleEncryptionAtom Dynamic Cast Anchor
+---------------------------------------------------------------------*/
AP4_DEFINE_DYNAMIC_CAST_ANCHOR(AP4_PiffSampleEncryptionAtom)
/*----------------------------------------------------------------------
| AP4_PiffSampleEncryptionAtom::Create
+---------------------------------------------------------------------*/
AP4_PiffSampleEncryptionAtom*
AP4_PiffSampleEncryptionAtom::Create(AP4_Size size, AP4_ByteStream& stream)
{
AP4_UI08 version = 0;
AP4_UI32 flags = 0;
AP4_Result result = ReadFullHeader(stream, version, flags);
if (AP4_FAILED(result)) return NULL;
if (version != 0) return NULL;
return new AP4_PiffSampleEncryptionAtom(size, version, flags, stream);
}
/*----------------------------------------------------------------------
| AP4_PiffSampleEncryptionAtom::AP4_PiffSampleEncryptionAtom
+---------------------------------------------------------------------*/
AP4_PiffSampleEncryptionAtom::AP4_PiffSampleEncryptionAtom(AP4_UI08 iv_size) :
AP4_UuidAtom(AP4_FULL_UUID_ATOM_HEADER_SIZE+4, AP4_UUID_PIFF_SAMPLE_ENCRYPTION_ATOM, 0, 0),
AP4_CencSampleEncryption(*((AP4_Atom*)this), iv_size)
{
}
/*----------------------------------------------------------------------
| AP4_PiffSampleEncryptionAtom::AP4_PiffSampleEncryptionAtom
+---------------------------------------------------------------------*/
AP4_PiffSampleEncryptionAtom::AP4_PiffSampleEncryptionAtom(AP4_UI32 size,
AP4_UI08 version,
AP4_UI32 flags,
AP4_ByteStream& stream) :
AP4_UuidAtom(size, AP4_UUID_PIFF_SAMPLE_ENCRYPTION_ATOM, version, flags),
AP4_CencSampleEncryption(*this, size, stream)
{
}
/*----------------------------------------------------------------------
| AP4_PiffSampleEncryptionAtom::AP4_PiffSampleEncryptionAtom
+---------------------------------------------------------------------*/
AP4_PiffSampleEncryptionAtom::AP4_PiffSampleEncryptionAtom(AP4_UI32 algorithm_id,
AP4_UI08 iv_size,
const AP4_UI08* kid) :
AP4_UuidAtom(AP4_FULL_UUID_ATOM_HEADER_SIZE+20+4, AP4_UUID_PIFF_SAMPLE_ENCRYPTION_ATOM, 0,
AP4_CENC_SAMPLE_ENCRYPTION_FLAG_OVERRIDE_TRACK_ENCRYPTION_DEFAULTS),
AP4_CencSampleEncryption(*this, algorithm_id, iv_size, kid)
{
}
/*----------------------------------------------------------------------
| AP4_PiffSampleEncryptionAtom::InspectFields
+---------------------------------------------------------------------*/
AP4_Result
AP4_PiffSampleEncryptionAtom::InspectFields(AP4_AtomInspector& inspector)
{
return DoInspectFields(inspector);
}
/*----------------------------------------------------------------------
| AP4_PiffSampleEncryptionAtom::WriteFields
+---------------------------------------------------------------------*/
AP4_Result
AP4_PiffSampleEncryptionAtom::WriteFields(AP4_ByteStream& stream)
{
return DoWriteFields(stream);
}
|
